Infiniti I30 (A33). Manual — part 138

LAN SIGNAL 3 — Continued Reception After
LAN Communication Starts

=NHBR0087

DIAGNOSTIC PROCEDURE

NHBR0087S01

Malfunction code No. 94

1

INSPECTION START

Self-diagnostic item “LAN SIGNAL 3” appears on display.

SBR541E

©

GO TO 2.

2

CHECK SELF-DIAGNOSIS

Perform self-diagnostic procedures for ECM.

Does self-diagnostic item [ECM-ABSTCS COMM NG] appear on display?

Yes

©

Check ECM. Refer to “TROUBLE DIAGNOSES” in EC section.

No

©

GO TO 3.

3

CHECK SELF-DIAGNOSIS

Does self-diagnostic item [ABS-TCS C/U SIGNAL] appears on display?

Yes

©

I

Replace control unit.

I

Repeat self-diagnostic procedures for control unit.

No

©

If other items appears on display, repair or replace affected areas.

GI

MA

EM

LC

EC

FE

AT

AX

SU

ST

RS

BT

HA

SC

EL

IDX

TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC ITEMS

TCS

LAN SIGNAL 3 — Continued Reception After LAN Communication Starts

BR-135

1. ABS Works Frequently

NHBR0073

1

CHECK BRAKE FLUID PRESSURE

Check brake fluid pressure distribution.
Refer to dual proportioning valve inspection in “DUAL PROPORTIONING VALVE”, BR-12.

Is brake fluid pressure distribution normal?

Yes

©

GO TO 2.

No

©

Perform Preliminary Check. Refer to BR-101.

2

CHECK WHEEL SENSOR

1. Check wheel sensor connector for terminal damage or loose connections.
2. Perform wheel sensor mechanical check.

Refer to “Wheel Sensor or Rotor”, BR-107.

Are wheel sensors functioning properly?

Yes

©

GO TO 3.

No

©

Repair.

3

CHECK FRONT AXLE

Check front and rear axles for excessive looseness. Refer to AX section, “Front Wheel Bearing”, “ON-VEHICLE SERVICE”
and “Rear Wheel Bearing”, “ON-VEHICLE SERVICE”.

Is front axle installed properly?

Yes

©

Go to “3. CHECK WARNING LAMP INDICATION” in “2. Unexpected Pedal Action”,
BR-136.

No

©

Repair.

2. Unexpected Pedal Action

NHBR0071

1

CHECK BRAKE PEDAL STROKE

Check brake pedal stroke. Is stroke excessively large?

SBR540A

Yes

©

Perform Preliminary Check. Refer to BR-101.

No

©

GO TO 2.

TROUBLE DIAGNOSES FOR SYMPTOMS

TCS

1. ABS Works Frequently

BR-136

2

CHECK CONNECTOR AND PERFORMANCE

1. Disconnect ABS solenoid valve relay.
2. Check whether brake is effective.

OK or NG

Yes

©

GO TO 3.

No

©

Perform Preliminary Check. Refer to BR-101.

3

CHECK WARNING LAMP INDICATION

Ensure warning lamp remains off while driving.

SBR655E

Is warning lamp turned off?

Yes

©

GO TO 4.

No

©

Carry out self-diagnosis. Refer to BR-91, BR-94.

4

CHECK WHEEL SENSOR

1. Check wheel sensor connector for terminal damage or loose connection.
2. Perform wheel sensor mechanical check. Refer to “Wheel Sensor Rotor”, BR-107.

Is wheel sensor mechanism OK?

Yes

©

Check control unit pin terminals for damage or the connection of control unit harness
connector. Reconnect control unit harness connector. Then retest.

No

©

Repair.

3. Long Stopping Distance

NHBR0070

1

CHECK CONNECTOR AND PERFORMANCE

1. Cancel ABS by disconnecting ABS solenoid valve relay.
2. Check stopping distance.

OK or NG

OK

©

Perform Preliminary Check and air bleeding.

NG

©

Go to “3. CHECK WARNING LAMP INDICATION” in “2. Unexpected Pedal Action”,
BR-136.

GI

MA

EM

LC

EC

FE

AT

AX

SU

ST

RS

BT

HA

SC

EL

IDX

TROUBLE DIAGNOSES FOR SYMPTOMS

TCS

2. Unexpected Pedal Action (Cont’d)

BR-137

NOTE:
Stopping distance may be longer than vehicles without ABS when
road condition is slippery.

4. ABS Does Not Work

NHBR0072

1

CHECK WARNING LAMP INDICATION

Does the ABS warning lamp activate?

Yes

©

Carry out self-diagnosis. Refer to BR-91, 94.

No

©

Go to “3. CHECK WARNING LAMP INDICATION” in “2. Unexpected Pedal Action”,
BR-136.

NOTE:
ABS does not work when vehicle speed is under 10 km/h (6 MPH).

TROUBLE DIAGNOSES FOR SYMPTOMS

TCS

3. Long Stopping Distance (Cont’d)

BR-138